diff --git a/NEWS.md b/NEWS.md
index aa418a624..3fa3f7e5d 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -5,6 +5,7 @@
 * `it()` now finds the correct evaluation environment in more cases (@averissimo, #2085).
 * Fixed an issue preventing compilation from succeeding due to deprecation / removal of `std::uncaught_exception()` (@kevinushey, #2047).
 * New `skip_unless_r()` to skip running tests on unsuitable versions of R, e.g. `skip_unless_r(">= 4.1.0")` to skip tests that require, say, `...names` (@MichaelChirico, #2022)
+* `skip_on_os()` gains an option `"emscripten"` of the `os` argument to skip tests on Emscripten (@eitsupi, #2103).
 
 # testthat 3.2.3
 
diff --git a/R/skip.R b/R/skip.R
index 1ad1de7ed..894cf7377 100644
--- a/R/skip.R
+++ b/R/skip.R
@@ -170,7 +170,8 @@ skip_on_cran <- function() {
 
 #' @export
 #' @param os Character vector of one or more operating systems to skip on.
-#'   Supported values are `"windows"`, `"mac"`, `"linux"`, and `"solaris"`.
+#'   Supported values are `"windows"`, `"mac"`, `"linux"`, `"solaris"`,
+#'   and `"emscripten"`.
 #' @param arch Character vector of one or more architectures to skip on.
 #'   Common values include `"i386"` (32 bit), `"x86_64"` (64 bit), and
 #'   `"aarch64"` (M1 mac). Supplying `arch` makes the test stricter; i.e. both
@@ -179,7 +180,7 @@ skip_on_cran <- function() {
 skip_on_os <- function(os, arch = NULL) {
   os <- match.arg(
     os,
-    choices = c("windows", "mac", "linux", "solaris"),
+    choices = c("windows", "mac", "linux", "solaris", "emscripten"),
     several.ok = TRUE
   )
 
@@ -187,7 +188,8 @@ skip_on_os <- function(os, arch = NULL) {
     windows = if ("windows" %in% os) "On Windows",
     darwin =  if ("mac" %in% os) "On Mac",
     linux =   if ("linux" %in% os) "On Linux",
-    sunos =   if ("solaris" %in% os) "On Solaris"
+    sunos =   if ("solaris" %in% os) "On Solaris",
+    emscripten = if ("emscripten" %in% os) "On Emscripten"
   )
 
   if (!is.null(arch) && !is.null(msg)) {
diff --git a/man/skip.Rd b/man/skip.Rd
index 911db42f2..e64ccfd8f 100644
--- a/man/skip.Rd
+++ b/man/skip.Rd
@@ -55,7 +55,8 @@ should only be run on R versions 4.1.0 and later.}
 \item{host}{A string with a hostname to lookup}
 
 \item{os}{Character vector of one or more operating systems to skip on.
-Supported values are \code{"windows"}, \code{"mac"}, \code{"linux"}, and \code{"solaris"}.}
+Supported values are \code{"windows"}, \code{"mac"}, \code{"linux"}, \code{"solaris"},
+and \code{"emscripten"}.}
 
 \item{arch}{Character vector of one or more architectures to skip on.
 Common values include \code{"i386"} (32 bit), \code{"x86_64"} (64 bit), and
diff --git a/tests/testthat/_snaps/skip.md b/tests/testthat/_snaps/skip.md
index c9247c7d4..3868f8216 100644
--- a/tests/testthat/_snaps/skip.md
+++ b/tests/testthat/_snaps/skip.md
@@ -70,7 +70,7 @@
       skip_on_os("amiga")
     Condition
       Error in `match.arg()`:
-      ! 'arg' should be one of "windows", "mac", "linux", "solaris"
+      ! 'arg' should be one of "windows", "mac", "linux", "solaris", "emscripten"
 
 # can skip on multiple oses
 
diff --git a/tests/testthat/test-skip.R b/tests/testthat/test-skip.R
index ff970078e..b4661cd26 100644
--- a/tests/testthat/test-skip.R
+++ b/tests/testthat/test-skip.R
@@ -122,6 +122,7 @@ test_that("can skip on multiple oses", {
   expect_snapshot_skip(skip_on_os(c("windows", "linux")))
   expect_no_skip(skip_on_os("linux"))
   expect_no_skip(skip_on_os("mac"))
+  expect_no_skip(skip_on_os("emscripten"))
 })
 
 test_that("can refine os with arch", {